1. Adventure Travel Society 2000
2. BBC 2000 Hilary and Tenzing, BBC1.
3. Modernity and Ambivalence;Bauman,1991
4. From Pilgrim to Tourist, or a Short History of Identity;Bauman,1996
5. Beedie, P. 2002 An Investigation of Identity Formation in Mountain Based Adventure Tourism. PhD dissertation in sociology, De Montfort University, UK.